<!DOCTYPE html>
<html>
<head>
    <title>Function as an Argument Example</title>
    <script type="text/javascript">
        function callSomeFunction(someFunction, someArgument){
            return someFunction(someArgument);
        }

        function add10(num){
            return num + 10;
        }
        
        var result1 = callSomeFunction(add10, 10);
        alert(result1);   //20
        
        function getGreeting(name){
            return "Hello, " + name;
        }
        
        var result2 = callSomeFunction(getGreeting, "Nicholas");
        alert(result2);   //Hello, Nicholas

    </script>
</head>
<body>

</body>
</html>